Hi! New to MacRumors. I hope this post helps all of us with understanding the nature of this problem. Eventually. (TL;DR: no solution found for me yet).
For what its worth, I'm a 20+ year network engineer with a business built around designing, implementing, and managing (including troubleshooting) business networks for my clients. I use my laptops (including my new 2021 14" M1 MBP) in as many as 5 different networks a day, plus my own office/home and iphone hotspot. I'm not the most experienced person on the planet, but I am qualified to share some objective info that you might find helpful too.
The distilled version of my (quite frustrating) experience with this network issue is this: the random inability to receive an IP address from a known-good DHCP server source. This behavior is COMPLETELY independent of the type or brand of network adapter, client's network environment, type or brand of connected wireless equipment or wired network switches or routers. The AVB/EAV hardware settings (or anything other than Automatic/manual and MTU settings) sirozha described are not present in any of the interfaces' advanced>hardware settings. While it worked for them, not relevant (at least by UI), to my situation.
My OS is currently 12.5.1. The problem existed in 12.5.0. Interestingly, the problem was not present for the first several weeks of owning this MBP. I've not found a 'trigger' event for this problem and it took me a while to isolate it down to the DHCP IP assignment as being the problem. But now that I have, the solution still eludes me. Hoping to get something on this soon, or I'll start the research on how to roll back (if such thing is possible) to an earlier OS version (pre-Monterey).
For folks less experienced or knowledgeable about how IP-based networking functions under the hood consider watching this video (or any of the many that exist) to educate yourself on exactly how DHCP functions:
The summary image in that video is good to insert here...I don't know where the Mac OS is breaking in this process, but it most definitely is somewhere...possibly at the discover, possibly at the ACK. I don't know and am not qualified to dig this level of detail out by packet analysis. At this point, I'm inclined to roll back to the version of Mac OS before Monterey if its a solution as the effort to do that is likely less than what would be in a packet analysis.
For what its worth, I'm a 20+ year network engineer with a business built around designing, implementing, and managing (including troubleshooting) business networks for my clients. I use my laptops (including my new 2021 14" M1 MBP) in as many as 5 different networks a day, plus my own office/home and iphone hotspot. I'm not the most experienced person on the planet, but I am qualified to share some objective info that you might find helpful too.
The distilled version of my (quite frustrating) experience with this network issue is this: the random inability to receive an IP address from a known-good DHCP server source. This behavior is COMPLETELY independent of the type or brand of network adapter, client's network environment, type or brand of connected wireless equipment or wired network switches or routers. The AVB/EAV hardware settings (or anything other than Automatic/manual and MTU settings) sirozha described are not present in any of the interfaces' advanced>hardware settings. While it worked for them, not relevant (at least by UI), to my situation.
My OS is currently 12.5.1. The problem existed in 12.5.0. Interestingly, the problem was not present for the first several weeks of owning this MBP. I've not found a 'trigger' event for this problem and it took me a while to isolate it down to the DHCP IP assignment as being the problem. But now that I have, the solution still eludes me. Hoping to get something on this soon, or I'll start the research on how to roll back (if such thing is possible) to an earlier OS version (pre-Monterey).
For folks less experienced or knowledgeable about how IP-based networking functions under the hood consider watching this video (or any of the many that exist) to educate yourself on exactly how DHCP functions:
The summary image in that video is good to insert here...I don't know where the Mac OS is breaking in this process, but it most definitely is somewhere...possibly at the discover, possibly at the ACK. I don't know and am not qualified to dig this level of detail out by packet analysis. At this point, I'm inclined to roll back to the version of Mac OS before Monterey if its a solution as the effort to do that is likely less than what would be in a packet analysis.
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